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D4Y2-S prototype aircraft, Yokosuka Navy Air Corps Oppama Base, Japan, summer 1944

Caption     D4Y2-S prototype aircraft, Yokosuka Navy Air Corps Oppama Base, Japan, summer 1944 ww2dbase
Photographer    Unknown
More on...   
D4Y Suisei   Main article  Photos  
Photos at Same Place Yokosuka, Kanagawa, Japan
Added By C. Peter Chen
Licensing  This work originating in Japan is in the public domain. According to Article 23 of the 1899 Copyright Act of Japan and Article 2 of Supplemental Provisions of Copyright Act of 1970, a work is in the public domain if it was created or published before 1 Jan 1957.

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Visitor Submitted Comments

1. Commenter identity confirmed Bill says:
20 Mar 2013 07:26:34 PM


Yokosuka D4Y-2S Suisei (Judy) Nightfighters operated over the Empire against American B-29s.
Conversions were carried out at the 11th Naval Aviation Arsenal, all bombing equipment was removed and one Type 99 20mm cannon was installed behind the pilot located in the rear cockpit.

This location was similar to the German Jazz Music
used in the Junkers Ju88 and other twin-engine night fighters. Some Judy aircraft also carried air-to-air rockets for night intercepts.


The Japanese lacked an effective radar control network the was effective for night fighters operating over the islands, against the high flying B-29s.
The Judy had a low climb rate to catch the B-29s. Little has been printed about Japanese night fighter operations near the end of the Pacific War.

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Modern Day Location
WW2-Era Place Name Yokosuka, Kanagawa, Japan
Lat/Long 35.3158, 139.6248
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